C = ( filter B by $0 > 0 ) as (RANK:bytearray, DATETIME:long);
C = JOIN big BY b1, massive BY m1 USING "skewed";
C = JOIN big BY b1, massive BY m1 USING "merge";
C = JOIN big BY b1, massive BY m1 USING "replicated";
B =(customer);
C = ( filter B by $0 > 0 ) as (a:bytearray, b:long);
        